* Shared (garbage collecting) pointers. Copied from Boost.
This commit is contained in:
Eelco Dolstra
parent
0b70231b9d
commit
6ba26f27c3
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@ -1,3 +1,5 @@
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SUBDIRS = format
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EXTRA_DIST = format.hpp
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EXTRA_DIST = assert.hpp checked_delete.hpp format.hpp \
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shared_ptr.hpp throw_exception.hpp \
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detail/shared_count.hpp detail/workaround.hpp
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38
src/boost/assert.hpp
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38
src/boost/assert.hpp
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@ -0,0 +1,38 @@
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//
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// boost/assert.hpp - BOOST_ASSERT(expr)
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//
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// Copyright (c) 2001, 2002 Peter Dimov and Multi Media Ltd.
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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// Note: There are no include guards. This is intentional.
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//
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// See http://www.boost.org/libs/utility/assert.html for documentation.
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//
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#undef BOOST_ASSERT
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#if defined(BOOST_DISABLE_ASSERTS)
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# define BOOST_ASSERT(expr) ((void)0)
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#elif defined(BOOST_ENABLE_ASSERT_HANDLER)
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#include <boost/current_function.hpp>
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namespace boost
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{
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void assertion_failed(char const * expr, char const * function, char const * file, long line); // user defined
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} // namespace boost
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#define BOOST_ASSERT(expr) ((expr)? ((void)0): ::boost::assertion_failed(#expr, BOOST_CURRENT_FUNCTION, __FILE__, __LINE__))
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#else
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# include <assert.h>
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# define BOOST_ASSERT(expr) assert(expr)
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#endif
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71
src/boost/checked_delete.hpp
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71
src/boost/checked_delete.hpp
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@ -0,0 +1,71 @@
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#ifndef BOOST_CHECKED_DELETE_HPP_INCLUDED
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#define BOOST_CHECKED_DELETE_HPP_INCLUDED
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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//
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// boost/checked_delete.hpp
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//
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// Copyright (c) 1999, 2000, 2001, 2002 boost.org
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// Copyright (c) 2002, 2003 Peter Dimov
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// Copyright (c) 2003 Daniel Frey
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// Copyright (c) 2003 Howard Hinnant
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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// See http://www.boost.org/libs/utility/checked_delete.html for documentation.
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//
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namespace boost
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{
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// verify that types are complete for increased safety
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template<class T> inline void checked_delete(T * x)
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{
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// intentionally complex - simplification causes regressions
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typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
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(void) sizeof(type_must_be_complete);
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delete x;
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}
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template<class T> inline void checked_array_delete(T * x)
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{
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typedef char type_must_be_complete[ sizeof(T)? 1: -1 ];
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(void) sizeof(type_must_be_complete);
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delete [] x;
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}
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template<class T> struct checked_deleter
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{
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typedef void result_type;
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typedef T * argument_type;
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void operator()(T * x) const
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{
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// boost:: disables ADL
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boost::checked_delete(x);
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}
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};
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template<class T> struct checked_array_deleter
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{
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typedef void result_type;
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typedef T * argument_type;
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void operator()(T * x) const
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{
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boost::checked_array_delete(x);
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}
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};
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} // namespace boost
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#endif // #ifndef BOOST_CHECKED_DELETE_HPP_INCLUDED
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555
src/boost/detail/shared_count.hpp
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555
src/boost/detail/shared_count.hpp
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#ifndef BOOST_DETAIL_SHARED_COUNT_HPP_INCLUDED
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#define BOOST_DETAIL_SHARED_COUNT_HPP_INCLUDED
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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//
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// detail/shared_count.hpp
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//
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// Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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//#include <boost/config.hpp>
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#if defined(BOOST_SP_USE_STD_ALLOCATOR) && defined(BOOST_SP_USE_QUICK_ALLOCATOR)
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# error BOOST_SP_USE_STD_ALLOCATOR and BOOST_SP_USE_QUICK_ALLOCATOR are incompatible.
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#endif
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#include <boost/checked_delete.hpp>
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#include <boost/throw_exception.hpp>
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//#include <boost/detail/lightweight_mutex.hpp>
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#if defined(BOOST_SP_USE_QUICK_ALLOCATOR)
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#include <boost/detail/quick_allocator.hpp>
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#endif
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#include <memory> // std::auto_ptr, std::allocator
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#include <functional> // std::less
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#include <exception> // std::exception
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#include <new> // std::bad_alloc
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#include <typeinfo> // std::type_info in get_deleter
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#include <cstddef> // std::size_t
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#ifdef __BORLANDC__
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# pragma warn -8026 // Functions with excep. spec. are not expanded inline
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# pragma warn -8027 // Functions containing try are not expanded inline
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#endif
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namespace boost
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{
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// Debug hooks
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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void sp_scalar_constructor_hook(void * px, std::size_t size, void * pn);
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void sp_array_constructor_hook(void * px);
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void sp_scalar_destructor_hook(void * px, std::size_t size, void * pn);
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void sp_array_destructor_hook(void * px);
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#endif
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// The standard library that comes with Borland C++ 5.5.1
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// defines std::exception and its members as having C calling
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// convention (-pc). When the definition of bad_weak_ptr
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// is compiled with -ps, the compiler issues an error.
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// Hence, the temporary #pragma option -pc below. The version
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// check is deliberately conservative.
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#if defined(__BORLANDC__) && __BORLANDC__ == 0x551
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# pragma option push -pc
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#endif
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class bad_weak_ptr: public std::exception
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{
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public:
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virtual char const * what() const throw()
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{
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return "boost::bad_weak_ptr";
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}
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};
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#if defined(__BORLANDC__) && __BORLANDC__ == 0x551
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# pragma option pop
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#endif
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namespace detail
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{
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class sp_counted_base
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{
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private:
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// typedef detail::lightweight_mutex mutex_type;
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public:
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sp_counted_base(): use_count_(1), weak_count_(1)
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{
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}
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virtual ~sp_counted_base() // nothrow
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{
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}
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// dispose() is called when use_count_ drops to zero, to release
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// the resources managed by *this.
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virtual void dispose() = 0; // nothrow
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// destruct() is called when weak_count_ drops to zero.
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virtual void destruct() // nothrow
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{
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delete this;
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}
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virtual void * get_deleter(std::type_info const & ti) = 0;
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void add_ref_copy()
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{
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#if defined(BOOST_HAS_THREADS)
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mutex_type::scoped_lock lock(mtx_);
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#endif
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++use_count_;
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}
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void add_ref_lock()
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{
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#if defined(BOOST_HAS_THREADS)
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mutex_type::scoped_lock lock(mtx_);
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#endif
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if(use_count_ == 0) boost::throw_exception(boost::bad_weak_ptr());
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++use_count_;
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}
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void release() // nothrow
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{
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{
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#if defined(BOOST_HAS_THREADS)
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mutex_type::scoped_lock lock(mtx_);
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#endif
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long new_use_count = --use_count_;
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if(new_use_count != 0) return;
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}
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dispose();
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weak_release();
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}
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void weak_add_ref() // nothrow
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{
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#if defined(BOOST_HAS_THREADS)
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mutex_type::scoped_lock lock(mtx_);
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#endif
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++weak_count_;
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}
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void weak_release() // nothrow
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{
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long new_weak_count;
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{
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#if defined(BOOST_HAS_THREADS)
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mutex_type::scoped_lock lock(mtx_);
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#endif
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new_weak_count = --weak_count_;
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}
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if(new_weak_count == 0)
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{
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destruct();
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}
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}
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long use_count() const // nothrow
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{
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#if defined(BOOST_HAS_THREADS)
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mutex_type::scoped_lock lock(mtx_);
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#endif
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return use_count_;
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}
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private:
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sp_counted_base(sp_counted_base const &);
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sp_counted_base & operator= (sp_counted_base const &);
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long use_count_; // #shared
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long weak_count_; // #weak + (#shared != 0)
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#if defined(BOOST_HAS_THREADS) || defined(BOOST_LWM_WIN32)
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mutable mutex_type mtx_;
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#endif
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};
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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template<class T> void cbi_call_constructor_hook(sp_counted_base * pn, T * px, checked_deleter<T> const &, int)
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{
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boost::sp_scalar_constructor_hook(px, sizeof(T), pn);
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}
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template<class T> void cbi_call_constructor_hook(sp_counted_base *, T * px, checked_array_deleter<T> const &, int)
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{
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boost::sp_array_constructor_hook(px);
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}
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template<class P, class D> void cbi_call_constructor_hook(sp_counted_base *, P const &, D const &, long)
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{
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}
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template<class T> void cbi_call_destructor_hook(sp_counted_base * pn, T * px, checked_deleter<T> const &, int)
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{
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boost::sp_scalar_destructor_hook(px, sizeof(T), pn);
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}
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template<class T> void cbi_call_destructor_hook(sp_counted_base *, T * px, checked_array_deleter<T> const &, int)
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{
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boost::sp_array_destructor_hook(px);
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}
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template<class P, class D> void cbi_call_destructor_hook(sp_counted_base *, P const &, D const &, long)
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{
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}
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#endif
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//
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// Borland's Codeguard trips up over the -Vx- option here:
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//
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#ifdef __CODEGUARD__
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# pragma option push -Vx-
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#endif
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template<class P, class D> class sp_counted_base_impl: public sp_counted_base
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{
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private:
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P ptr; // copy constructor must not throw
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D del; // copy constructor must not throw
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sp_counted_base_impl(sp_counted_base_impl const &);
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sp_counted_base_impl & operator= (sp_counted_base_impl const &);
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typedef sp_counted_base_impl<P, D> this_type;
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public:
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// pre: initial_use_count <= initial_weak_count, d(p) must not throw
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sp_counted_base_impl(P p, D d): ptr(p), del(d)
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{
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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detail::cbi_call_constructor_hook(this, p, d, 0);
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#endif
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}
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virtual void dispose() // nothrow
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{
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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detail::cbi_call_destructor_hook(this, ptr, del, 0);
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#endif
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del(ptr);
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}
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virtual void * get_deleter(std::type_info const & ti)
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{
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return ti == typeid(D)? &del: 0;
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}
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#if defined(BOOST_SP_USE_STD_ALLOCATOR)
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void * operator new(std::size_t)
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{
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return std::allocator<this_type>().allocate(1, static_cast<this_type *>(0));
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}
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void operator delete(void * p)
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{
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std::allocator<this_type>().deallocate(static_cast<this_type *>(p), 1);
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}
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#endif
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#if defined(BOOST_SP_USE_QUICK_ALLOCATOR)
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void * operator new(std::size_t)
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{
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return quick_allocator<this_type>::alloc();
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}
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void operator delete(void * p)
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{
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quick_allocator<this_type>::dealloc(p);
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}
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#endif
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};
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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int const shared_count_id = 0x2C35F101;
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int const weak_count_id = 0x298C38A4;
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#endif
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class weak_count;
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class shared_count
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{
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private:
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sp_counted_base * pi_;
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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int id_;
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#endif
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friend class weak_count;
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public:
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shared_count(): pi_(0) // nothrow
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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, id_(shared_count_id)
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#endif
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{
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}
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template<class P, class D> shared_count(P p, D d): pi_(0)
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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, id_(shared_count_id)
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#endif
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{
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#ifndef BOOST_NO_EXCEPTIONS
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try
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{
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pi_ = new sp_counted_base_impl<P, D>(p, d);
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}
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catch(...)
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{
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d(p); // delete p
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throw;
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}
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#else
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pi_ = new sp_counted_base_impl<P, D>(p, d);
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if(pi_ == 0)
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{
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d(p); // delete p
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boost::throw_exception(std::bad_alloc());
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}
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#endif
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}
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#ifndef BOOST_NO_AUTO_PTR
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// auto_ptr<Y> is special cased to provide the strong guarantee
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template<class Y>
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explicit shared_count(std::auto_ptr<Y> & r): pi_(new sp_counted_base_impl< Y *, checked_deleter<Y> >(r.get(), checked_deleter<Y>()))
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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, id_(shared_count_id)
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#endif
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{
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r.release();
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}
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#endif
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~shared_count() // nothrow
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{
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if(pi_ != 0) pi_->release();
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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id_ = 0;
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#endif
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}
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shared_count(shared_count const & r): pi_(r.pi_) // nothrow
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#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
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, id_(shared_count_id)
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#endif
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{
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if(pi_ != 0) pi_->add_ref_copy();
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}
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explicit shared_count(weak_count const & r); // throws bad_weak_ptr when r.use_count() == 0
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shared_count & operator= (shared_count const & r) // nothrow
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{
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sp_counted_base * tmp = r.pi_;
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if(tmp != 0) tmp->add_ref_copy();
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if(pi_ != 0) pi_->release();
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pi_ = tmp;
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return *this;
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}
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void swap(shared_count & r) // nothrow
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{
|
||||
sp_counted_base * tmp = r.pi_;
|
||||
r.pi_ = pi_;
|
||||
pi_ = tmp;
|
||||
}
|
||||
|
||||
long use_count() const // nothrow
|
||||
{
|
||||
return pi_ != 0? pi_->use_count(): 0;
|
||||
}
|
||||
|
||||
bool unique() const // nothrow
|
||||
{
|
||||
return use_count() == 1;
|
||||
}
|
||||
|
||||
friend inline bool operator==(shared_count const & a, shared_count const & b)
|
||||
{
|
||||
return a.pi_ == b.pi_;
|
||||
}
|
||||
|
||||
friend inline bool operator<(shared_count const & a, shared_count const & b)
|
||||
{
|
||||
return std::less<sp_counted_base *>()(a.pi_, b.pi_);
|
||||
}
|
||||
|
||||
void * get_deleter(std::type_info const & ti) const
|
||||
{
|
||||
return pi_? pi_->get_deleter(ti): 0;
|
||||
}
|
||||
};
|
||||
|
||||
#ifdef __CODEGUARD__
|
||||
# pragma option pop
|
||||
#endif
|
||||
|
||||
|
||||
class weak_count
|
||||
{
|
||||
private:
|
||||
|
||||
sp_counted_base * pi_;
|
||||
|
||||
#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
|
||||
int id_;
|
||||
#endif
|
||||
|
||||
friend class shared_count;
|
||||
|
||||
public:
|
||||
|
||||
weak_count(): pi_(0) // nothrow
|
||||
#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
|
||||
, id_(weak_count_id)
|
||||
#endif
|
||||
{
|
||||
}
|
||||
|
||||
weak_count(shared_count const & r): pi_(r.pi_) // nothrow
|
||||
#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
|
||||
, id_(shared_count_id)
|
||||
#endif
|
||||
{
|
||||
if(pi_ != 0) pi_->weak_add_ref();
|
||||
}
|
||||
|
||||
weak_count(weak_count const & r): pi_(r.pi_) // nothrow
|
||||
#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
|
||||
, id_(shared_count_id)
|
||||
#endif
|
||||
{
|
||||
if(pi_ != 0) pi_->weak_add_ref();
|
||||
}
|
||||
|
||||
~weak_count() // nothrow
|
||||
{
|
||||
if(pi_ != 0) pi_->weak_release();
|
||||
#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
|
||||
id_ = 0;
|
||||
#endif
|
||||
}
|
||||
|
||||
weak_count & operator= (shared_count const & r) // nothrow
|
||||
{
|
||||
sp_counted_base * tmp = r.pi_;
|
||||
if(tmp != 0) tmp->weak_add_ref();
|
||||
if(pi_ != 0) pi_->weak_release();
|
||||
pi_ = tmp;
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
weak_count & operator= (weak_count const & r) // nothrow
|
||||
{
|
||||
sp_counted_base * tmp = r.pi_;
|
||||
if(tmp != 0) tmp->weak_add_ref();
|
||||
if(pi_ != 0) pi_->weak_release();
|
||||
pi_ = tmp;
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
void swap(weak_count & r) // nothrow
|
||||
{
|
||||
sp_counted_base * tmp = r.pi_;
|
||||
r.pi_ = pi_;
|
||||
pi_ = tmp;
|
||||
}
|
||||
|
||||
long use_count() const // nothrow
|
||||
{
|
||||
return pi_ != 0? pi_->use_count(): 0;
|
||||
}
|
||||
|
||||
friend inline bool operator==(weak_count const & a, weak_count const & b)
|
||||
{
|
||||
return a.pi_ == b.pi_;
|
||||
}
|
||||
|
||||
friend inline bool operator<(weak_count const & a, weak_count const & b)
|
||||
{
|
||||
return std::less<sp_counted_base *>()(a.pi_, b.pi_);
|
||||
}
|
||||
};
|
||||
|
||||
inline shared_count::shared_count(weak_count const & r): pi_(r.pi_)
|
||||
#if defined(BOOST_SP_ENABLE_DEBUG_HOOKS)
|
||||
, id_(shared_count_id)
|
||||
#endif
|
||||
{
|
||||
if(pi_ != 0)
|
||||
{
|
||||
pi_->add_ref_lock();
|
||||
}
|
||||
else
|
||||
{
|
||||
boost::throw_exception(boost::bad_weak_ptr());
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace detail
|
||||
|
||||
} // namespace boost
|
||||
|
||||
#ifdef __BORLANDC__
|
||||
# pragma warn .8027 // Functions containing try are not expanded inline
|
||||
# pragma warn .8026 // Functions with excep. spec. are not expanded inline
|
||||
#endif
|
||||
|
||||
#endif // #ifndef BOOST_DETAIL_SHARED_COUNT_HPP_INCLUDED
|
||||
74
src/boost/detail/workaround.hpp
Normal file
74
src/boost/detail/workaround.hpp
Normal file
|
|
@ -0,0 +1,74 @@
|
|||
// Copyright David Abrahams 2002. Permission to copy, use,
|
||||
// modify, sell and distribute this software is granted provided this
|
||||
// copyright notice appears in all copies. This software is provided
|
||||
// "as is" without express or implied warranty, and with no claim as
|
||||
// to its suitability for any purpose.
|
||||
#ifndef WORKAROUND_DWA2002126_HPP
|
||||
# define WORKAROUND_DWA2002126_HPP
|
||||
|
||||
// Compiler/library version workaround macro
|
||||
//
|
||||
// Usage:
|
||||
//
|
||||
// #if BOOST_WORKAROUND(BOOST_MSVC, <= 1200)
|
||||
// ... // workaround code here
|
||||
// #endif
|
||||
//
|
||||
// When BOOST_STRICT_CONFIG is defined, expands to 0. Otherwise, the
|
||||
// first argument must be undefined or expand to a numeric
|
||||
// value. The above expands to:
|
||||
//
|
||||
// (BOOST_MSVC) != 0 && (BOOST_MSVC) <= 1200
|
||||
//
|
||||
// When used for workarounds that apply to the latest known version
|
||||
// and all earlier versions of a compiler, the following convention
|
||||
// should be observed:
|
||||
//
|
||||
// #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1301))
|
||||
//
|
||||
// The version number in this case corresponds to the last version in
|
||||
// which the workaround was known to have been required. When
|
||||
// BOOST_DETECT_OUTDATED_WORKAROUNDS is not the defined, the macro
|
||||
// BOOST_TESTED_AT(x) expands to "!= 0", which effectively activates
|
||||
// the workaround for any version of the compiler. When
|
||||
// BOOST_DETECT_OUTDATED_WORKAROUNDS is defined, a compiler warning or
|
||||
// error will be issued if the compiler version exceeds the argument
|
||||
// to BOOST_TESTED_AT(). This can be used to locate workarounds which
|
||||
// may be obsoleted by newer versions.
|
||||
|
||||
# ifndef BOOST_STRICT_CONFIG
|
||||
|
||||
# define BOOST_WORKAROUND(symbol, test) \
|
||||
((symbol != 0) && (1 % (( (symbol test) ) + 1)))
|
||||
// ^ ^ ^ ^
|
||||
// The extra level of parenthesis nesting above, along with the
|
||||
// BOOST_OPEN_PAREN indirection below, is required to satisfy the
|
||||
// broken preprocessor in MWCW 8.3 and earlier.
|
||||
//
|
||||
// The basic mechanism works as follows:
|
||||
// (symbol test) + 1 => if (symbol test) then 2 else 1
|
||||
// 1 % ((symbol test) + 1) => if (symbol test) then 1 else 0
|
||||
//
|
||||
// The complication with % is for cooperation with BOOST_TESTED_AT().
|
||||
// When "test" is BOOST_TESTED_AT(x) and
|
||||
// BOOST_DETECT_OUTDATED_WORKAROUNDS is #defined,
|
||||
//
|
||||
// symbol test => if (symbol <= x) then 1 else -1
|
||||
// (symbol test) + 1 => if (symbol <= x) then 2 else 0
|
||||
// 1 % ((symbol test) + 1) => if (symbol <= x) then 1 else divide-by-zero
|
||||
//
|
||||
|
||||
# ifdef BOOST_DETECT_OUTDATED_WORKAROUNDS
|
||||
# define BOOST_OPEN_PAREN (
|
||||
# define BOOST_TESTED_AT(value) > value) ?(-1): BOOST_OPEN_PAREN 1
|
||||
# else
|
||||
# define BOOST_TESTED_AT(value) != ((value)-(value))
|
||||
# endif
|
||||
|
||||
# else
|
||||
|
||||
# define BOOST_WORKAROUND(symbol, test) 0
|
||||
|
||||
# endif
|
||||
|
||||
#endif // WORKAROUND_DWA2002126_HPP
|
||||
|
|
@ -34,16 +34,6 @@
|
|||
|
||||
#include <boost/format/macros_default.hpp>
|
||||
|
||||
namespace boost
|
||||
{
|
||||
template<class E> void throw_exception(E const & e)
|
||||
{
|
||||
throw e;
|
||||
}
|
||||
}
|
||||
|
||||
#define BOOST_ASSERT(expr) assert(expr)
|
||||
|
||||
|
||||
// **** Forward declarations ----------------------------------
|
||||
#include <boost/format/format_fwd.hpp> // basic_format<Ch,Tr>, and other frontends
|
||||
|
|
|
|||
|
|
@ -24,7 +24,7 @@
|
|||
#include "boost/format/format_class.hpp"
|
||||
#include "boost/format/group.hpp"
|
||||
|
||||
//#include "boost/throw_exception.hpp"
|
||||
#include "boost/throw_exception.hpp"
|
||||
|
||||
namespace boost {
|
||||
namespace io {
|
||||
|
|
|
|||
|
|
@ -20,8 +20,8 @@
|
|||
#ifndef BOOST_FORMAT_IMPLEMENTATION_HPP
|
||||
#define BOOST_FORMAT_IMPLEMENTATION_HPP
|
||||
|
||||
//#include <boost/throw_exception.hpp>
|
||||
//#include <boost/assert.hpp>
|
||||
#include <boost/throw_exception.hpp>
|
||||
#include <boost/assert.hpp>
|
||||
#include <boost/format.hpp>
|
||||
|
||||
namespace boost {
|
||||
|
|
|
|||
|
|
@ -20,7 +20,7 @@
|
|||
#define BOOST_FORMAT_FUNCS_HPP
|
||||
|
||||
#include "boost/format.hpp"
|
||||
//#include "boost/throw_exception.hpp"
|
||||
#include "boost/throw_exception.hpp"
|
||||
|
||||
namespace boost {
|
||||
|
||||
|
|
|
|||
|
|
@ -23,8 +23,8 @@
|
|||
|
||||
|
||||
#include <boost/format.hpp>
|
||||
//#include <boost/throw_exception.hpp>
|
||||
//#include <boost/assert.hpp>
|
||||
#include <boost/throw_exception.hpp>
|
||||
#include <boost/assert.hpp>
|
||||
|
||||
|
||||
namespace boost {
|
||||
|
|
|
|||
474
src/boost/shared_ptr.hpp
Normal file
474
src/boost/shared_ptr.hpp
Normal file
|
|
@ -0,0 +1,474 @@
|
|||
#ifndef BOOST_SHARED_PTR_HPP_INCLUDED
|
||||
#define BOOST_SHARED_PTR_HPP_INCLUDED
|
||||
|
||||
//
|
||||
// shared_ptr.hpp
|
||||
//
|
||||
// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
|
||||
// Copyright (c) 2001, 2002, 2003 Peter Dimov
|
||||
//
|
||||
// Permission to copy, use, modify, sell and distribute this software
|
||||
// is granted provided this copyright notice appears in all copies.
|
||||
// This software is provided "as is" without express or implied
|
||||
// warranty, and with no claim as to its suitability for any purpose.
|
||||
//
|
||||
// See http://www.boost.org/libs/smart_ptr/shared_ptr.htm for documentation.
|
||||
//
|
||||
|
||||
//#include <boost/config.hpp> // for broken compiler workarounds
|
||||
|
||||
#if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
|
||||
#include <boost/detail/shared_ptr_nmt.hpp>
|
||||
#else
|
||||
|
||||
#include <boost/assert.hpp>
|
||||
#include <boost/checked_delete.hpp>
|
||||
#include <boost/throw_exception.hpp>
|
||||
#include <boost/detail/shared_count.hpp>
|
||||
#include <boost/detail/workaround.hpp>
|
||||
|
||||
#include <memory> // for std::auto_ptr
|
||||
#include <algorithm> // for std::swap
|
||||
#include <functional> // for std::less
|
||||
#include <typeinfo> // for std::bad_cast
|
||||
#include <iosfwd> // for std::basic_ostream
|
||||
|
||||
#ifdef BOOST_MSVC // moved here to work around VC++ compiler crash
|
||||
# pragma warning(push)
|
||||
# pragma warning(disable:4284) // odd return type for operator->
|
||||
#endif
|
||||
|
||||
namespace boost
|
||||
{
|
||||
|
||||
template<class T> class weak_ptr;
|
||||
template<class T> class enable_shared_from_this;
|
||||
|
||||
namespace detail
|
||||
{
|
||||
|
||||
struct static_cast_tag {};
|
||||
struct const_cast_tag {};
|
||||
struct dynamic_cast_tag {};
|
||||
struct polymorphic_cast_tag {};
|
||||
|
||||
template<class T> struct shared_ptr_traits
|
||||
{
|
||||
typedef T & reference;
|
||||
};
|
||||
|
||||
template<> struct shared_ptr_traits<void>
|
||||
{
|
||||
typedef void reference;
|
||||
};
|
||||
|
||||
#if !defined(BOOST_NO_CV_VOID_SPECIALIZATIONS)
|
||||
|
||||
template<> struct shared_ptr_traits<void const>
|
||||
{
|
||||
typedef void reference;
|
||||
};
|
||||
|
||||
template<> struct shared_ptr_traits<void volatile>
|
||||
{
|
||||
typedef void reference;
|
||||
};
|
||||
|
||||
template<> struct shared_ptr_traits<void const volatile>
|
||||
{
|
||||
typedef void reference;
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
// enable_shared_from_this support
|
||||
|
||||
template<class T, class Y> void sp_enable_shared_from_this(boost::enable_shared_from_this<T> * pe, Y * px, shared_count const & pn)
|
||||
{
|
||||
if(pe != 0) pe->_internal_weak_this._internal_assign(px, pn);
|
||||
}
|
||||
|
||||
inline void sp_enable_shared_from_this(void const volatile *, void const volatile *, shared_count const &)
|
||||
{
|
||||
}
|
||||
|
||||
} // namespace detail
|
||||
|
||||
|
||||
//
|
||||
// shared_ptr
|
||||
//
|
||||
// An enhanced relative of scoped_ptr with reference counted copy semantics.
|
||||
// The object pointed to is deleted when the last shared_ptr pointing to it
|
||||
// is destroyed or reset.
|
||||
//
|
||||
|
||||
template<class T> class shared_ptr
|
||||
{
|
||||
private:
|
||||
|
||||
// Borland 5.5.1 specific workaround
|
||||
typedef shared_ptr<T> this_type;
|
||||
|
||||
public:
|
||||
|
||||
typedef T element_type;
|
||||
typedef T value_type;
|
||||
typedef T * pointer;
|
||||
typedef typename detail::shared_ptr_traits<T>::reference reference;
|
||||
|
||||
shared_ptr(): px(0), pn() // never throws in 1.30+
|
||||
{
|
||||
}
|
||||
|
||||
template<class Y>
|
||||
explicit shared_ptr(Y * p): px(p), pn(p, checked_deleter<Y>()) // Y must be complete
|
||||
{
|
||||
detail::sp_enable_shared_from_this(p, p, pn);
|
||||
}
|
||||
|
||||
//
|
||||
// Requirements: D's copy constructor must not throw
|
||||
//
|
||||
// shared_ptr will release p by calling d(p)
|
||||
//
|
||||
|
||||
template<class Y, class D> shared_ptr(Y * p, D d): px(p), pn(p, d)
|
||||
{
|
||||
detail::sp_enable_shared_from_this(p, p, pn);
|
||||
}
|
||||
|
||||
// generated copy constructor, assignment, destructor are fine...
|
||||
|
||||
// except that Borland C++ has a bug, and g++ with -Wsynth warns
|
||||
#if defined(__BORLANDC__) || defined(__GNUC__)
|
||||
|
||||
shared_ptr & operator=(shared_ptr const & r) // never throws
|
||||
{
|
||||
px = r.px;
|
||||
pn = r.pn; // shared_count::op= doesn't throw
|
||||
return *this;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
template<class Y>
|
||||
explicit shared_ptr(weak_ptr<Y> const & r): pn(r.pn) // may throw
|
||||
{
|
||||
// it is now safe to copy r.px, as pn(r.pn) did not throw
|
||||
px = r.px;
|
||||
}
|
||||
|
||||
template<class Y>
|
||||
shared_ptr(shared_ptr<Y> const & r): px(r.px), pn(r.pn) // never throws
|
||||
{
|
||||
}
|
||||
|
||||
template<class Y>
|
||||
shared_ptr(shared_ptr<Y> const & r, detail::static_cast_tag): px(static_cast<element_type *>(r.px)), pn(r.pn)
|
||||
{
|
||||
}
|
||||
|
||||
template<class Y>
|
||||
shared_ptr(shared_ptr<Y> const & r, detail::const_cast_tag): px(const_cast<element_type *>(r.px)), pn(r.pn)
|
||||
{
|
||||
}
|
||||
|
||||
template<class Y>
|
||||
shared_ptr(shared_ptr<Y> const & r, detail::dynamic_cast_tag): px(dynamic_cast<element_type *>(r.px)), pn(r.pn)
|
||||
{
|
||||
if(px == 0) // need to allocate new counter -- the cast failed
|
||||
{
|
||||
pn = detail::shared_count();
|
||||
}
|
||||
}
|
||||
|
||||
template<class Y>
|
||||
shared_ptr(shared_ptr<Y> const & r, detail::polymorphic_cast_tag): px(dynamic_cast<element_type *>(r.px)), pn(r.pn)
|
||||
{
|
||||
if(px == 0)
|
||||
{
|
||||
boost::throw_exception(std::bad_cast());
|
||||
}
|
||||
}
|
||||
|
||||
#ifndef BOOST_NO_AUTO_PTR
|
||||
|
||||
template<class Y>
|
||||
explicit shared_ptr(std::auto_ptr<Y> & r): px(r.get()), pn()
|
||||
{
|
||||
Y * tmp = r.get();
|
||||
pn = detail::shared_count(r);
|
||||
detail::sp_enable_shared_from_this(tmp, tmp, pn);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#if !defined(BOOST_MSVC) || (BOOST_MSVC > 1200)
|
||||
|
||||
template<class Y>
|
||||
shared_ptr & operator=(shared_ptr<Y> const & r) // never throws
|
||||
{
|
||||
px = r.px;
|
||||
pn = r.pn; // shared_count::op= doesn't throw
|
||||
return *this;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#ifndef BOOST_NO_AUTO_PTR
|
||||
|
||||
template<class Y>
|
||||
shared_ptr & operator=(std::auto_ptr<Y> & r)
|
||||
{
|
||||
this_type(r).swap(*this);
|
||||
return *this;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
void reset() // never throws in 1.30+
|
||||
{
|
||||
this_type().swap(*this);
|
||||
}
|
||||
|
||||
template<class Y> void reset(Y * p) // Y must be complete
|
||||
{
|
||||
BOOST_ASSERT(p == 0 || p != px); // catch self-reset errors
|
||||
this_type(p).swap(*this);
|
||||
}
|
||||
|
||||
template<class Y, class D> void reset(Y * p, D d)
|
||||
{
|
||||
this_type(p, d).swap(*this);
|
||||
}
|
||||
|
||||
reference operator* () const // never throws
|
||||
{
|
||||
BOOST_ASSERT(px != 0);
|
||||
return *px;
|
||||
}
|
||||
|
||||
T * operator-> () const // never throws
|
||||
{
|
||||
BOOST_ASSERT(px != 0);
|
||||
return px;
|
||||
}
|
||||
|
||||
T * get() const // never throws
|
||||
{
|
||||
return px;
|
||||
}
|
||||
|
||||
// implicit conversion to "bool"
|
||||
|
||||
#if defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x530)
|
||||
|
||||
operator bool () const
|
||||
{
|
||||
return px != 0;
|
||||
}
|
||||
|
||||
#elif defined(__MWERKS__) && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
|
||||
typedef T * (this_type::*unspecified_bool_type)() const;
|
||||
|
||||
operator unspecified_bool_type() const // never throws
|
||||
{
|
||||
return px == 0? 0: &this_type::get;
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
typedef T * this_type::*unspecified_bool_type;
|
||||
|
||||
operator unspecified_bool_type() const // never throws
|
||||
{
|
||||
return px == 0? 0: &this_type::px;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
// operator! is redundant, but some compilers need it
|
||||
|
||||
bool operator! () const // never throws
|
||||
{
|
||||
return px == 0;
|
||||
}
|
||||
|
||||
bool unique() const // never throws
|
||||
{
|
||||
return pn.unique();
|
||||
}
|
||||
|
||||
long use_count() const // never throws
|
||||
{
|
||||
return pn.use_count();
|
||||
}
|
||||
|
||||
void swap(shared_ptr<T> & other) // never throws
|
||||
{
|
||||
std::swap(px, other.px);
|
||||
pn.swap(other.pn);
|
||||
}
|
||||
|
||||
template<class Y> bool _internal_less(shared_ptr<Y> const & rhs) const
|
||||
{
|
||||
return pn < rhs.pn;
|
||||
}
|
||||
|
||||
void * _internal_get_deleter(std::type_info const & ti) const
|
||||
{
|
||||
return pn.get_deleter(ti);
|
||||
}
|
||||
|
||||
// Tasteless as this may seem, making all members public allows member templates
|
||||
// to work in the absence of member template friends. (Matthew Langston)
|
||||
|
||||
#ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
|
||||
|
||||
private:
|
||||
|
||||
template<class Y> friend class shared_ptr;
|
||||
template<class Y> friend class weak_ptr;
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
T * px; // contained pointer
|
||||
detail::shared_count pn; // reference counter
|
||||
|
||||
}; // shared_ptr
|
||||
|
||||
template<class T, class U> inline bool operator==(shared_ptr<T> const & a, shared_ptr<U> const & b)
|
||||
{
|
||||
return a.get() == b.get();
|
||||
}
|
||||
|
||||
template<class T, class U> inline bool operator!=(shared_ptr<T> const & a, shared_ptr<U> const & b)
|
||||
{
|
||||
return a.get() != b.get();
|
||||
}
|
||||
|
||||
#if __GNUC__ == 2 && __GNUC_MINOR__ <= 96
|
||||
|
||||
// Resolve the ambiguity between our op!= and the one in rel_ops
|
||||
|
||||
template<class T> inline bool operator!=(shared_ptr<T> const & a, shared_ptr<T> const & b)
|
||||
{
|
||||
return a.get() != b.get();
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
template<class T, class U> inline bool operator<(shared_ptr<T> const & a, shared_ptr<U> const & b)
|
||||
{
|
||||
return a._internal_less(b);
|
||||
}
|
||||
|
||||
template<class T> inline void swap(shared_ptr<T> & a, shared_ptr<T> & b)
|
||||
{
|
||||
a.swap(b);
|
||||
}
|
||||
|
||||
template<class T, class U> shared_ptr<T> static_pointer_cast(shared_ptr<U> const & r)
|
||||
{
|
||||
return shared_ptr<T>(r, detail::static_cast_tag());
|
||||
}
|
||||
|
||||
template<class T, class U> shared_ptr<T> const_pointer_cast(shared_ptr<U> const & r)
|
||||
{
|
||||
return shared_ptr<T>(r, detail::const_cast_tag());
|
||||
}
|
||||
|
||||
template<class T, class U> shared_ptr<T> dynamic_pointer_cast(shared_ptr<U> const & r)
|
||||
{
|
||||
return shared_ptr<T>(r, detail::dynamic_cast_tag());
|
||||
}
|
||||
|
||||
// shared_*_cast names are deprecated. Use *_pointer_cast instead.
|
||||
|
||||
template<class T, class U> shared_ptr<T> shared_static_cast(shared_ptr<U> const & r)
|
||||
{
|
||||
return shared_ptr<T>(r, detail::static_cast_tag());
|
||||
}
|
||||
|
||||
template<class T, class U> shared_ptr<T> shared_dynamic_cast(shared_ptr<U> const & r)
|
||||
{
|
||||
return shared_ptr<T>(r, detail::dynamic_cast_tag());
|
||||
}
|
||||
|
||||
template<class T, class U> shared_ptr<T> shared_polymorphic_cast(shared_ptr<U> const & r)
|
||||
{
|
||||
return shared_ptr<T>(r, detail::polymorphic_cast_tag());
|
||||
}
|
||||
|
||||
template<class T, class U> shared_ptr<T> shared_polymorphic_downcast(shared_ptr<U> const & r)
|
||||
{
|
||||
BOOST_ASSERT(dynamic_cast<T *>(r.get()) == r.get());
|
||||
return shared_static_cast<T>(r);
|
||||
}
|
||||
|
||||
// get_pointer() enables boost::mem_fn to recognize shared_ptr
|
||||
|
||||
template<class T> inline T * get_pointer(shared_ptr<T> const & p)
|
||||
{
|
||||
return p.get();
|
||||
}
|
||||
|
||||
// operator<<
|
||||
|
||||
#if defined(__GNUC__) && (__GNUC__ < 3)
|
||||
|
||||
template<class Y> std::ostream & operator<< (std::ostream & os, shared_ptr<Y> const & p)
|
||||
{
|
||||
os << p.get();
|
||||
return os;
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
# if defined(BOOST_MSVC) && BOOST_WORKAROUND(BOOST_MSVC, <= 1200 && __SGI_STL_PORT)
|
||||
// MSVC6 has problems finding std::basic_ostream through the using declaration in namespace _STL
|
||||
using std::basic_ostream;
|
||||
template<class E, class T, class Y> basic_ostream<E, T> & operator<< (basic_ostream<E, T> & os, shared_ptr<Y> const & p)
|
||||
# else
|
||||
template<class E, class T, class Y> std::basic_ostream<E, T> & operator<< (std::basic_ostream<E, T> & os, shared_ptr<Y> const & p)
|
||||
# endif
|
||||
{
|
||||
os << p.get();
|
||||
return os;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
// get_deleter (experimental)
|
||||
|
||||
#if (defined(__GNUC__) && (__GNUC__ < 3)) || (defined(__EDG_VERSION__) && (__EDG_VERSION__ <= 238))
|
||||
|
||||
// g++ 2.9x doesn't allow static_cast<X const *>(void *)
|
||||
// apparently EDG 2.38 also doesn't accept it
|
||||
|
||||
template<class D, class T> D * get_deleter(shared_ptr<T> const & p)
|
||||
{
|
||||
void const * q = p._internal_get_deleter(typeid(D));
|
||||
return const_cast<D *>(static_cast<D const *>(q));
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
template<class D, class T> D * get_deleter(shared_ptr<T> const & p)
|
||||
{
|
||||
return static_cast<D *>(p._internal_get_deleter(typeid(D)));
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
} // namespace boost
|
||||
|
||||
#ifdef BOOST_MSVC
|
||||
# pragma warning(pop)
|
||||
#endif
|
||||
|
||||
#endif // #if defined(BOOST_NO_MEMBER_TEMPLATES) && !defined(BOOST_MSVC6_MEMBER_TEMPLATES)
|
||||
|
||||
#endif // #ifndef BOOST_SHARED_PTR_HPP_INCLUDED
|
||||
47
src/boost/throw_exception.hpp
Normal file
47
src/boost/throw_exception.hpp
Normal file
|
|
@ -0,0 +1,47 @@
|
|||
#ifndef BOOST_THROW_EXCEPTION_HPP_INCLUDED
|
||||
#define BOOST_THROW_EXCEPTION_HPP_INCLUDED
|
||||
|
||||
// MS compatible compilers support #pragma once
|
||||
|
||||
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
|
||||
# pragma once
|
||||
#endif
|
||||
|
||||
//
|
||||
// boost/throw_exception.hpp
|
||||
//
|
||||
// Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
|
||||
//
|
||||
// Permission to copy, use, modify, sell and distribute this software
|
||||
// is granted provided this copyright notice appears in all copies.
|
||||
// This software is provided "as is" without express or implied
|
||||
// warranty, and with no claim as to its suitability for any purpose.
|
||||
//
|
||||
// http://www.boost.org/libs/utility/throw_exception.html
|
||||
//
|
||||
|
||||
//#include <boost/config.hpp>
|
||||
|
||||
#ifdef BOOST_NO_EXCEPTIONS
|
||||
# include <exception>
|
||||
#endif
|
||||
|
||||
namespace boost
|
||||
{
|
||||
|
||||
#ifdef BOOST_NO_EXCEPTIONS
|
||||
|
||||
void throw_exception(std::exception const & e); // user defined
|
||||
|
||||
#else
|
||||
|
||||
template<class E> void throw_exception(E const & e)
|
||||
{
|
||||
throw e;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
} // namespace boost
|
||||
|
||||
#endif // #ifndef BOOST_THROW_EXCEPTION_HPP_INCLUDED
|
||||
Loading…
Reference in a new issue